ANGELUS OAKS — County firefighters worked to carefully off-load nearly 10,000 gallons of propane from an overturned tanker truck Sunday on Highway 38 in Angelus Oaks, San Bernardino County Fire officials said.

Highway 38 was shut down in both directions near Jen Lake Road and is expected to remain closed until Sunday night.

At about 9:45 a.m., the tanker was traveling north on Highway 38 near Jen Lake Road when for unknown reasons, the driver lost control causing the large vehicle to roll onto its side, according to a release. The driver was able to get out safely.

County Hazardous Materials team members helped clean up a small fuel spill, but were more concerned of the potential fire danger the propane the tanker was hauling could pose to the surrounding forest, officials said.

California Highway Patrol officials are investigating the cause of the crash.